1USB_BUFFER_DMASYNC_S(9)          USB Core APIs         USB_BUFFER_DMASYNC_S(9)
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NAME

6       usb_buffer_dmasync_sg - synchronize DMA and CPU view of scatterlist
7       buffer(s)
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SYNOPSIS

10       void usb_buffer_dmasync_sg(const struct usb_device * dev, int is_in,
11                                  struct scatterlist * sg, int n_hw_ents);
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ARGUMENTS

14       dev
15           device to which the scatterlist will be mapped
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17       is_in
18           mapping transfer direction
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20       sg
21           the scatterlist to synchronize
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23       n_hw_ents
24           the positive return value from usb_buffer_map_sg
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DESCRIPTION

27       Use this when you are re-using a scatterlist´s data buffers for another
28       USB request.
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31Kernel Hackers Manual 2.6.         June 2019           USB_BUFFER_DMASYNC_S(9)
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